Recover Lost Key Pair of AWS EC2 Linux Instance 

The easiest way is: 1) Create image of original image. 2) Launch new EC2 instance using AMI image (from step 1) with new key pair. 3) Login new EC2 instance with new key. Cheers!

Its May 2020, and this solution is still working as expected. Thanks Vismi Tech!

Thank you very much! With your demo I was able to reset the key pair on a Bitnami wordpress instance.

men it still works in 2022, great job

Best and easiest way so far... you nailed it dear

Absolutely what I was looking for. Very Well Explained. Cheers Bro. Thumbs Up!

Clear nice explanation step by step! Great job!

Thanks man for the video. Even if it's old, but it helped me to use with another (in may case: existing) .pem file as key pair. Just few notes for watchers: 1. on 8:40 sure don't need to use the default "/dev/sdf". But "/dev/xvda" also didn't helped me, because after attaching that volume to the original (prod) instance, I've got an error when I want to start the instance. So instead I've used "/dev/sda1". I've found about that here: stackoverflow.com/a/45157742 But if you getting an error, don't be disappointed, check another versions of answers. The reason may be the difference of available zones. 2. Also after successfully starting the instance, and checking the SSH connection, you can easily terminate/delete the temporary (recovery) instance. So it not need anymore 3. Later for original instance, when you hit the "Connect" button, it will open a modal, which where mentioned about old key pair. Don't worry, that's normal. So remember to use the newly recovered .pem file for SSH connections.

Amazing worked perfectly, thanks and keep up the good work man!

You saved my day. Thank you!

You saved my day!! I recovered access again!

You just saved my day! :) Thank you.

Really worked out...Thank you

"Problem Instance->Stop->Detach root vol . Create new instance->attach root vol->lsblk->mount->copy authrized key->stop ->detach/attach to old"

Thanks a ton. You saved me.

mount: /mnt/new: wrong fs type, bad option, bad superblock on /dev/xvdf1, missing codepage or helper program, or other error. i am not able to mount the volume

Nice video. Thanks. If my instance is not using elastic IP, will it generate a new public IP and will I need to update my DNS?

Excellent ...thanks for sharing

Since you're concatenating the two key pairs to the authorized key file, are either key pairs able to access the production EC2 instance?

I think the title should be how to log onto an EC2 instance for which you lost the key with a new key instead of recover lost key

That Worked! Thank You

Very informative

Thanks, helped a lot

thanks. it works for me.

works perfect...awesome...

you da best!

Thank you man!

Thanks a lot man.

THANK YOU SO MUCH

Thanks a lot.

an error:Adter attached root volume to original server then starting instance ,i am facing " Instance reachability check failed". Please help me, i did restart the instance

The original instance's device is "/dev/sdf1". How to handle it? Invalid value 'i-03d021052a9c26745' for instanceId. Instance does not have a volume attached at root (/dev/sda1) And then, when I set the device in /dev/sda1 , I cannot connect to the instance Show "ssh: connect to host xx.xx.xxx.xx port 22: Operation timed out"

Hi there everyone I have a little problem, I have lost a key pairs of one of my instances, so when recovering the instance I have to stop the instance I have lost the key for, so will I loose data from that instance???

cat command if we trying to copy from ubuntu to amazon linux??

Чувак ты помог

Thank you :)

while iam attaching the /dev/xvda to old instance it showing error "Invalid value 'i-0f04c8f3ae12275e5' for instanceId. Instance does not have a volume attached at root (/dev/sda1)".please help me

if i detach the volume will i loose the data?? Thnaks....

cat /home/ec2-user/.ssh/authorized_keys > /mnt/recovery/home/ec2-user/.ssh/authorized_keys it says no such file or directory

an error: when re-attach i need stop the second instance too

is there different directory for key in ubuntu? Since i followed same step but i am still not able to access with new key, i think i didn't key was not copied correctly. Please help anyone for ubuntu linux. Thanks in advance!

It is not recovering the Lost Key. You are using your new key. You never able get back the old key. What if we use the same key for 100 instances?

So simple

how i can connect my instance on android?

server refused our key

it's not case of lost key pair!

-bash: /mnt/recovery/home/ec2-user/.ssh/authorized_keys: No such file or directory

wtf does aws have to be complicated? lol

like I should do something to stop the flow of time #Keecrack on IG It’s just a wonderful experience. Thanks for your time,.